The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

Reaching this rock formation involves a hike through rocky rapids and springs where wild turtles reproduce.

The city walls of Salé lead to the ruins of this seaside "bastion of tears."

The rubbery beast is sculpted from recycled materials.

The oldest known university in the world is in Fez, Morocco.

Traditional 11th-century outdoor tannery.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

The other side is actually green.

Mosaics, storks, and brothels—this ancient city has it all.

Founded as a refugee camp, now a popular tourist spot.

This road earned its macabre nickname after hundreds of Iraqi troops died along it in 1991.

Kuwait City's uniquely designed water towers look straight out of a retro sci-fi cityscape.

This seemingly random 30-foot statue of an oryx in Qatar's capital was a mascot for the 2006 Asian Games.

This vibrant side road in Doha was painted light blue to reduce heat.

This 23-foot-tall bear stands amid the hustle and bustle of Hamad International Airport.

Fourteen sculptures showing the development of a fetus stand outside a hospital for women and children.

The enormous diamond-shaped building packs a trove of academic and literary treasures into one futuristic space.

This fountain pays homage to Qatar's history of pearling, the primary industry before oil.

A staggering number of rock carvings in an abandoned quarry.

Qatar's oldest market can trace its origins back more than a century.

The building is a gigantic piece of art inspired by the shape of a desert rose.

Skyscraper powered by wind turbines attached between its towers.

This centuries-old tree tells an unusual tale of vegetation and fertility in the desert.

A network of ancient Egyptian tombs built into the cliff face along the Nile.